(1) Unloading according to the size of the elevator door openings: keel with a large core board cutting and panel.

(2) Laying keel and panel in layers: Fix the keel to the wall.

(3) elevator door frame to find 2cm line.

(4) about 2200mm cement wall installation spacing ≤ 500mm keel five, the lower part of 100mm from the ground, the upper part of the top 200mm, the middle and the distribution of spacing ≤ 500mm; the upper two.